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4 years ago

Electromagnetic waves differ only in their _____, their energy, and their frequency.

Physics

1 answer:

Tanya [424]4 years ago

6 0

Answer:

Wavelength

Explanation:

Electromagnetic Waves have different wavelengths.

They only differ from each other in wavelength. Wavelength is the distance between one wave crest to the next.

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Two long, parallel wires are separated by a distance of 2.60 cm. The force per unit length that each wire exerts on the other is

Alex777 [14]

Answer:

10.75 A

The current is in opposite direction since it causes a repulsion force between the wires

Explanation:

Force per unit length on the wires = 4.30×10^−5 N/m

distance between wires = 2.6 cm = 0.026 m

current through one wire = 0.52 A

current on the other wire = ?

Recall that the force per unit length of two wires conducting and lying parallel and close to each other is given as

$F/l$ = $\frac{u_{0}I_{1} I_{2} }{2\pi r }$

where $F/l$ is the force per unit length on the wires

$u_{0}$ = permeability of vacuum = 4π × 10^−7 T-m/A

$I_{1}$ = current on the first wire = 0.520 A

$I_{2}$ = current on the other wire = ?

r = the distance between the two wire = 0.026 m

substituting the value into the equation, we have

4.30×10^−5 = $\frac{4\pi *10^{-7}*0.520*I_{2} }{2\pi *0.026}$ = $\frac{ 2*10^{-7}*0.520*I_{2} }{0.026}$

4.30×10^−5 = 4 x 10^-6 $I_{2}$

$I_{2}$ = (4.30×10^-5)/(4 x 10^-6) = 10.75 A

The current is in opposite direction since it causes a repulsion force between the wires.

6 0

4 years ago

In Part C, how would the effects differ if you connected the galvanometer to the primary coil and the battery/switch to the seco

Katen [24]

N₂ / N₁ = 13.3

A transformer is a device that changes the voltage in the primary, causing a voltage to be induced in the secondary. The expression for this voltage ratio is

ΔV₂ = N₂ /N₁ ΔV₁

where N is the number of windings on each side and V2 and V1 are the voltages in the secondary and primary, respectively.

They state that the primary voltage in this instance is 9.0 V and the secondary voltage is 120 V.

ΔV₂ /ΔV₁ = N₂ / N₁

N₂ / N₁ = 120/9

N₂ / N₁ = 13.3

Learn more about voltage here brainly.com/question/16774947

#SPJ4.

A 9.0-V battery (with nonzero resistance) and switch are connected in series across the primary coil of a transformer. The secondary coil is connected to a light bulb that operates on 120 V. Determine the ratio of the secondary to primary turns needed for the bell's transformer. Determine the ratio of the secondary to primary turns needed for the bells transformer. Ns/Np=?

4 0

2 years ago

What is absolute zero? What is the temperature of absolute zero on the Kelvin and Celsius scales?

salantis [7]

Answer:

Absolute zero = 0 K or - 273°C

Explanation:

Absolute zero :

When the entropy and enthalpy of the ideal system reach at the minimum value then the temperature at that condition is known as absolute zero condition.

Absolute temperature is the minimum temperature in the temperature scale.The value of absolute zero is 0 K.

We know that

$\dfrac{C-0}{100}=\dfrac{K-273}{100}=\dfrac{F-32}{180}$

F=Temperature in Fahrenheit scale

K=Temperature in Kelvin scale

C=Temperature in degree Celsius scale

When K = 0

$\dfrac{C-0}{100}=\dfrac{K-273}{100}$

$\dfrac{C-0}{100}=\dfrac{0-273}{100}$

C= - 273°C

Absolute zero = 0 K or - 273°C

6 0

3 years ago

Read 2 more answers

A surface completely surrounds a 3.3 × 10-6 C charge. Find the electric flux through this surface when the surface is (a) a sphe

KengaRu [80]

Answer:

Electric flux in a) , b) and c) is same which is 0.373 × 10 ⁶ N m²/C

Explanation:

given,

surface charge (q) = 3.3 × 10⁻⁶ C

to calculate electric flux = ?

a) radius = 0.76 m

area of sphere = 4 π r²

electric flux = $\dfrac{q}{\varepsilon}$

$\varepsilon = 8.85 \times 10^{-12} C^2/Nm^2$

electric flux = $\dfrac{3.3 \times 10^{-6}}{8.85 \times 10^{-12} }$

flux = 0.373 × 10 ⁶ N m²/C

electric flux in the other two cases will also be same as electric flux is independent of area

so, Electric flux in a) , b) and c) is same which is 0.373 × 10 ⁶ N m²/C

5 0

4 years ago

Which way does the friction arrow go in a free body diagram for a moving object point

True [87]

Answer:

Frictional force opposes relative motion between surfaces

Explanation:

Friction that exists when the object is not moving is called static friction. In static friction ,If we are applying a force in the object the frictional force is in the opposite direction . If it is not the case, there have been some net force and the object starts accelarating.

The main component of the contact force of two objects is normal force and that is in the perpendicular direction. Frictional force is other complnent. This frictional force is parallel to the interface between objects. Frictional force opposes relative motion between surfaces.

7 0

4 years ago

Read 2 more answers